Lock for car-seats



UNITED STATES PATENT OFFICE.

ARAD DUNCAN AND JOHN M. ZIEGLER, OF AURORA, ILLINOIS.

LOCK AFOR CAR-SEATS.

Specification forming part of Letters Patent- No. 16,456, dated February 21, i865.

To all whom it may concern:

Beit known that we, ARAD DUNcAN and J oHANN M. ZIEGLER, of Aurora, in the county of Kane and `State of Illinois, have invented a new and Improved Oar-Seat Lock; and we do hereby declare that the following is a full, clear, and 'exact description thereof', which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this sccication, in which- Figure l represents a longitudinal central section of' this invention, the line x x, Fig. 4, indicating the plane ot' section. Fig. 2 is a detached side elevation of the cam which serves to force back the bolt. Fig. 3 is an end view of the same. Fig. 4 is an end View ofthe lock.

Similar letters of reference indicate corre` spending parts.

This invention consists in the employment or use, for a car-seat lock, of a revolving` bolt, secured in a round case, and provided with a projection, which, by traveling on an inclined plane or cam as the bolt rotates, causes the same to recede in such a manner that an ordinary spring bolt or latch with a round iianged case or barrel can be readily opened and closed by means of a key which serves to impart to said bolt a revolving motion, and a lock is obtained which can be easily applied to a'carseat or any other article simply by boring a hole large enough to receive the barrel, and securing the same by screws passing through suitable holes in its tlange.

A represents a round case or barrel, made ot` brass, iron, or other suitable material, and provided with two dan ges, B, furnished with holes to receive screws, by means of which the snne can be secured to the place where it is to be used. The barrel A is provided at one end with a suitable hole to receive a key, O, wlnch may be hollow or not, as may be desirable, and the other end ot' said case is open.

and calculated to receive the cam D, which also forms the guide for the bolt E.

This bolt is round, and it is subjected to the action of a spiral spring, a, which has a tendency to force the same in the direction ot' the arrow marked on it in Fig. l ot' the drawings. The inner end of the bolt is provided with a cavity, b, to receive the bit ot' the key O, and if a hollow key is to be used a pin, c, projects from the bolt to tit into and forni a guide for the key, as clearly shown in the drawings.

The outer end or head of the bolt is beveled ori", so that the same is rendered selfclosing, and it is furnished with a projection or dog, d, which bears on the inner inclined surface ofthe cam D. This cam might be constructed 'in various different ways. For instance, an oblique slot in the side ot' the barrel would produce the same action, and we do not wish to confine ourselves to the precise form ot' the cam shown in the drawings. By turning the bolt in the proper direction the dog d travels up the inclined plane ofthe cam, and said bolt is drawn in or the lock is opened, and by turning` the key in the opposite direction the dog reassumes its original position, and the head of the bolt projects beyond the barrel A, as shown in Fig. l. By turning the key, therefore, the bolt can be drawn in and the lock unlocked, but without the key it is impossible to unlock the bolt provided the outer end or head of the saine is protected so that it cannot be' forced back. This lock is of' the greatest conven ienee, particularly for locking car-seats, but it can be used with advantage for a great manyr other purposes. It can be easily applied simply by drilling a hole large enough to insert the barrel A. It is simple and cheap, and whenlocked it is just as safe as any other lock of ordinary construction.

We claim as new and desire to secure by Letters Patent- The combination ot the bolt E, pin d, cam D, spring a, and barrel A, when constructed and arranged as herein specified, so that when in its operative position the said bolt willproject from its case but be free t-o spring within the saine in closing, and when reversed will be held within its case by the action of the cam and pin.

ARAD DUNCAN. JOHANN M. ZIEGLER. 

